Home / 20,015.59-27,607.21-15,291.67

Finding the Fourth Proportional to 20,015.59, 27,607.21 and 15,291.67

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Solution

The fourth proportional to 20,015.59, 27,607.21 and 15,291.67 is: 21,091.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.59 : 27,607.21 = 15,291.67 : x
  2. Step 2: Convert to fraction form
    20,015.59/27,607.21 = 15,291.67/x
  3. Step 3: Cross multiply
    20,015.59x = 27,607.21 × 15,291.67
  4. Step 4: Simplify right side
    20,015.59x = 422,160,344.94
  5. Step 5: Solve for x
    x = 422,160,344.94/20,015.59
  6. Step 6: Final answer
    x = 21,091.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.